22kb is quite small when compared to the end result - could almost be considered as an intro ;)
Generated 3d is also very accurate for a 8bits!
So basically this prod is a melt of "this" and "that" - so much stuff on screen that my brain can't actually understand properly.. ;)
Bravo!!

I can't stop to smile, this is stunning, all in fullscreen... It really push the Atari ST hard! (;)) I'm really excited to run that megadrive demo on real hardware but first I'm going to rewatch this demo again on the CTM644-2. Shiiit, and it works on any CRTC.

Sorry Cyg, there is
no precalc sprites in 22k
no symetrie either
no copy paste too (Amstrad has no fill rate, this is not an Atari)
it may be named 'big-step-scroll'
the reality is even more clever ^_^

Thanks for your comments so far!
Write-up is coming ''soon'' - no need for explanations right now which could lower the magic for those who have not seen the intro yet.
Guys!? is there anyone who think this is also à killer track? Thanks @Tom&Jerry.

I think for majikeyric what you should do is turn your annoyance into action! My main motivation for becoming a coder was the lousy conversion of Vigilante from arcade/coin op to c64. Thinking I could do it better made me learn coding.

For this prod I see countless hours of messing with badly documented hw registers and then tweaking content until cross eyed

wonderfulll ! layer after layer i can't believe this :) i would love to see it on real hardware but then i own a to8d :) no more computer right now ! after all thanx a lot for pure beauty and rulllllllllllllez

Well, after the splendid 4k-compo i thought the highlights were shown for this party. 64k-compo showed me i was wrong. Then the Oldskool-Demo compo was about to begin and i didn´t await anything ("we´ve seen it all a thousand times before!") and your demo got shown 2nd (for whatever reason), while i was expecting the good stuff to show up towards the end of the compo and then you surprised me with this impossible stuff and my yaw was at the floor once again! ;)
I really can´t await to read the write-up! ;)
splendid demo! ♥

Massively fresh and truly inspiring demo. Somehow, for me, Logon systems do it again. Many thanks for explaining how the damn thing works and do expect some of these ideas to pop up on friendly competitive platforms :)